Accepting ‘rough sex’ as a man’s defence for killing a mockery is made by a woman of y our justice system Natalie sustained no fewer than 40 split accidents, including serious trauma that is internal a fractured attention socket and facial wounds. He poured bleach on her behalf face What’s the distinction between manslaughter and murder? The supposed dividing line in British legislation is intent – or, to translate the Latin mens rea, “guilty mind”.